org.onosproject.store.primitives.impl

Class PartitionedTransactionalMap<K,V>

java.lang.Object

org.onosproject.store.primitives.impl.PartitionedTransactionalMap<K,V>

All Implemented Interfaces:

TransactionalMap<K,V>

public class PartitionedTransactionalMap<K,V>
extends Object
implements TransactionalMap<K,V>

Partitioned transactional map.

Field Summary

Fields

Modifier and Type	Field and Description
protected Hasher<K>	hasher
protected Map<PartitionId,TransactionalMapParticipant<K,V>>	partitions

Constructor Summary

Constructors

Constructor and Description
PartitionedTransactionalMap(Map<PartitionId,TransactionalMapParticipant<K,V>> partitions, Hasher<K> hasher)

Method Summary

Modifier and Type	Method and Description
boolean	containsKey(K key) Returns true if this map contains a mapping for the specified key.
V	get(K key) Returns the value to which the specified key is mapped, or null if this map contains no mapping for the key.
V	put(K key, V value) Associates the specified value with the specified key in this map (optional operation).
V	putIfAbsent(K key, V value) If the specified key is not already associated with a value associates it with the given value and returns null, else returns the current value.
V	remove(K key) Removes the mapping for a key from this map if it is present (optional operation).
boolean	remove(K key, V value) Removes the entry for the specified key only if it is currently mapped to the specified value.
boolean	replace(K key, V oldValue, V newValue) Replaces the entry for the specified key only if currently mapped to the specified value.
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

partitions

protected final Map<PartitionId,TransactionalMapParticipant<K,V>> partitions

hasher

protected final Hasher<K> hasher

Constructor Detail

PartitionedTransactionalMap

public PartitionedTransactionalMap(Map<PartitionId,TransactionalMapParticipant<K,V>> partitions,
                                   Hasher<K> hasher)

Method Detail

get

public V get(K key)

Description copied from interface: TransactionalMap

Returns the value to which the specified key is mapped, or null if this map contains no mapping for the key.

Specified by:

get in interface TransactionalMap<K,V>

Parameters:

key - the key whose associated value is to be returned

Returns:

the value to which the specified key is mapped, or null if this map contains no mapping for the key

containsKey

public boolean containsKey(K key)

Description copied from interface: TransactionalMap

Returns true if this map contains a mapping for the specified key.

Specified by:

containsKey in interface TransactionalMap<K,V>

Parameters:

key - key whose presence in this map to be tested

Returns:

true if this map contains a mapping for the specified key

put

public V put(K key,
             V value)

Description copied from interface: TransactionalMap

Associates the specified value with the specified key in this map (optional operation). If the map previously contained a mapping for the key, the old value is replaced by the specified value.

Specified by:

put in interface TransactionalMap<K,V>

Parameters:

key - key with which the specified value is to be associated

value - value to be associated with the specified key

Returns:

the previous value associated with key, or null if there was no mapping for key.

remove

public V remove(K key)

Description copied from interface: TransactionalMap

Removes the mapping for a key from this map if it is present (optional operation).

Specified by:

remove in interface TransactionalMap<K,V>

Parameters:

key - key whose value is to be removed from the map

Returns:

the value to which this map previously associated the key, or null if the map contained no mapping for the key.

putIfAbsent

public V putIfAbsent(K key,
                     V value)

Description copied from interface: TransactionalMap

If the specified key is not already associated with a value associates it with the given value and returns null, else returns the current value.

Specified by:

putIfAbsent in interface TransactionalMap<K,V>

Parameters:

key - key with which the specified value is to be associated

value - value to be associated with the specified key

Returns:

the previous value associated with the specified key or null if key does not already mapped to a value.

remove

public boolean remove(K key,
                      V value)

Description copied from interface: TransactionalMap

Removes the entry for the specified key only if it is currently mapped to the specified value.

Specified by:

remove in interface TransactionalMap<K,V>

Parameters:

key - key with which the specified value is associated

value - value expected to be associated with the specified key

Returns:

true if the value was removed

replace

public boolean replace(K key,
                       V oldValue,
                       V newValue)

Description copied from interface: TransactionalMap

Replaces the entry for the specified key only if currently mapped to the specified value.

Specified by:

replace in interface TransactionalMap<K,V>

Parameters:

key - key with which the specified value is associated

oldValue - value expected to be associated with the specified key

newValue - value to be associated with the specified key

Returns:

true if the value was replaced

toString

public String toString()

Overrides:

toString in class Object